/*flex布局*/
.flex-col {
  display: flex;
  flex-direction: column;
  > span {
    display: block;
  }
}

.flex-cnt {
  display: flex;
  align-items: center;
  > span {
    display: block;
  }
}

.flex-cnt-cnt {
  .flex-cnt;
  justify-content: center;
}

.flex-cnt-btwn {
  .flex-cnt;
  justify-content: space-between;
}

.flex-cnt-start {
  .flex-cnt;
  justify-content: flex-start;
}

.flex-cnt-wrap {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  > span {
    display: block;
  }
}

.flex-cnt-wrap-btwn {
  .flex-cnt-wrap;
  justify-content: space-between;
}

.fill {
  flex: 1;
}